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Friday Seminar by Dr. Susmita Dass

JPK Lab/ Friday/ October 13, 2017/3.30 pm/Auxin in Seed Germination

Category: Research

Posted by: bedineel

Auxin in Seed Germination

Susmita Dass

Seed germination is one most daunting task in a plant’s life cycle. It is governed by the interplay of various hormones like, abscisic acid, gibberellins, auxin, ethylene, cytokinins, brassinosteroids, in response to environmental cues like, light and water. Transcription factor ABI3 is one of the determining factor in seed germination phenomenon. Auxin has been implicated in positively regulating ABA signalling pathway by inducing ARF-mediated ABI3 activation, thus controlling seed dormancy. Recently though another face of auxin has come up-front. Loss of function of two histone deacetylase-binding factor, SNL1 and SNL2 results in faster germination and radicle protrusion phenomenon. Aux1 has been identified as factor that primarily govern this phenotype. Aux1 expression and regulation of acetylation of histone H3 at lysine by SNL1 and SNL2 presents an important link between histone acetylation, auxin response and seed germination.